A. Bicycle Chain 统计\(\frac{b_j}{a_i}\)最大值以及个数. B. Olympic Medal \(\frac{m_{out}=\pi (r_1^2-r_2^2)hp_1}{m_{in}=\pi r_2^2hp_2} = \frac{A}{B}\) \[r_2^2=\frac{r_1^2}{1+\frac{Ap_2}{Bp_1}}\] \(r_1,p_1\)取最大值,\(p_2\)取最小值. C. Crosses 分两种情况讨论: 两个矩形形成嵌套,那么假设\(c…

Description The official capital and the cultural capital of Berland are connected by a single road running through n regions. Each region has a unique climate, so the i-th (1 ≤ i ≤ n) region has a stable temperature of ti degrees in summer. This sum…

Educational Codeforces Round 132 (Rated for Div. 2) A. Three Doors 简述 题意: 有三扇门(1~3), 其中两扇门后面有对应标号门的钥匙,现在手上有一把标号为n的钥匙,是否能打开所有的门? 判断现在有的钥匙 对应的门后 是否有钥匙即可,就是套娃 不是 Code #define OK cout << (ok ? "YES" : "NO") << endl void testcas…

Codeforces Round #366 (Div. 2) A I hate that I love that I hate it水题 #I hate that I love that I hate it n = int(raw_input()) s = "" a = ["I hate that ","I love that ", "I hate it","I love it"] for i in ran…

Codeforces Round #354 (Div. 2) Problems     # Name     A Nicholas and Permutation standard input/output 1 s, 256 MB    x3384 B Pyramid of Glasses standard input/output 1 s, 256 MB    x1462 C Vasya and String standard input/output 1 s, 256 MB    x1393…

直达–>Codeforces Round #368 (Div. 2) A Brain’s Photos 给你一个NxM的矩阵,一个字母代表一种颜色,如果有”C”,”M”,”Y”三种中任意一种就输出”#Color”,如果只有”G”,”B”,”W”就输出”#Black&White”. #include <cstdio> #include <cstring> using namespace std; const int maxn = 200; const int INF =…

 cf之路,1,Codeforces Round #345 (Div. 2) ps:昨天第一次参加cf比赛,比赛之前为了熟悉下cf比赛题目的难度.所以做了round#345连试试水的深浅.....       其实这个应该是昨天就写完的,不过没时间了,就留到了今天.. 地址:http://codeforces.com/contest/651/problem/A A. Joysticks time limit per test 1 second memory limit per test 256…

Codeforces Round #279 (Div. 2) 做得我都变绿了! Problems     # Name     A Team Olympiad standard input/output 1 s, 256 MB  x2377 B Queue standard input/output 2 s, 256 MB  x1250 C Hacking Cypher standard input/output 1 s, 256 MB  x740 D Chocolate standard in…

Codeforces Round #262 (Div. 2) 1003 C. Present time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Little beaver is a beginner programmer, so informatics is his favorite subject. Soon his info…

Codeforces Round #262 (Div. 2) 1004 D. Little Victor and Set time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Victor adores the sets theory. Let us remind you that a set is a group of…